Glider swing



W 1937 1.. LARSEN GLIDER SWING Filed Feb. 1., 1956 2 Sheets$heet 2 Patented May-1171937 PATENT OFFIE cmpnn SWING Lewis Larsen, Menominee. Mich, assignor to Heywood-Wakefield Company, Boston, Mass, a corporation of Massachusetts Application February 1, 1936, Serial No. 61,843

11 Claims.

This invention relates to improvements in glider swings and it consistsof the matters hereinafter described and more particularly pointed out in the appended claims.

One of the objects of the present invention is to provide a swing of this kind wherein the seat has a silent smooth back-and-forth action.

Another object of the invention isto provide a swing of this kind having a novel parallel arrangement of seat supporting arms, each mounted at one end for a horizontal swinging movement about vertical axes.

A further object of the invention is to provide means between the pairs of parallel arms on the base, whereby said arms are caused to move in unison for an even swinging movement of the seat.

The above mentioned objects of the invention. as well as others, together with the advantages thereof will more fully appear as I proceed with my specification.

In thedrawings:

Fig. l is a view in side elevation of a glider swing embodyingthe preferred form of the invention.

Fig. 2 is a horizontal sectional view through the same as taken on the line 2-2 of Fig. 1.

Fig. 3 is a vertical detail sectional view through an end part of the swing on an enlarged scale as taken on the line 3-3 of Fig. 2.

Fig. 4 is a vertical detail sectional view on a further enlarged scale as taken on the line 4 l of Fig. 2.

Referring now in detail to that embodiment of the invention illustrated in the drawings, 5 indicates the base of the glider swing and 6 indicates the seat thereof. The base as shown herein includes endframes 1-4 and front and rear connecting reach bars 8-8. Each end frame is 0 in the form of a substantially elongated loop and includes inner and outer side members 9 and ill respectively, connected together by front and rear end members i|'i i. Said frames are preferably made of tubing. The connecting bars t-fi which are also preferably made of tubing are welded at their ends to inner side members of both frames 'i--1 as best appears in Fig. 2.

Associated with each frame 1 is a pair of parallel arms i2i2. Each arm as shown herein is of substantially triangular shape. Each arm includes a vertical post portion i3 and a horizontal arm portion it connected at one end to the top end of its associated post portion. A diagonal brace i5 is provided between the arm i4 and the bottom end of the post portion. These parts are preferably made of tubing and welded together. Arranged in the post portion of each arm is an axis pin it. The bottom end of each pin is secured in the inner side member 9 of each end frame and suitable thrust and radial bearings are provided between each pin and its post whereby each arm l2 may be swung in a'horizontai plane about a vertical axis.

An angle bar member i1, connects the top end of both posts and a brace I8 leads down from each end of said angle bar member I1 to a point on the connecting bars 8. Another brace l9 conmeets the mid portion of each angle bar member I! with the outer member in of the associated frame I. This arrangement assures holding the posts i3 rigidly in a vertical position. The horizontal member Id of each arm i2 is of a length somewhat greater than the width of its associated frame I, so that the free end of said member overhangs the outer member ID of the frame. The outer end of each member i4 is provided with a suitable cap for finishing purposes.

A bar 20. in the form of a piece of tubing. rests upon the top side and is pivotally connected at the points M to the outer ends of the members l4 of each pair of the arms l2--I2. The spacing between the pivots 2i is substantially the same as the spacing between the pivot pins it. Thus the arms l2--i2 of each setare arranged for a parallelogram movement. On the front member movement of the arms of one set with those of :1

the other set so that both sets of arms will always swing evenly together.

The seat includes side frames arranged in substantially the same vertical planes as the bars 20. Each side frame includes substantially horizontal top. bottom and intermediate members 24-25 and 26 respectively. The front ends of the top and bottom members 24-25. are connected together by an upright member 21 and the rear end of the bottom member is connected 'to the rear end of the intermediate member by a member 28. The front end of the intermediate member is connected to the member 2'! and the rear end of said intermediate member extends upwardly and rearwardly as a back rest side member 29. The rear end of each top member 24 which constitutes an arm rest, is attached to a back rest side member 29. The members 29 of each side frame are connected together at the top by a member 30. The side frames are further I side frames of the seat.

of the forward and rearward movement of the seat with respect to the base.

When the seat of the swing is unoccupied, the parts will gravitate into a midway position wherein the arms l2-I2 of each pair extend substantially parallel with the 'members 8-8 of the base'as best appears in full lines in Fig. 1 and in dotted lines in Fig'. 2. In this position, the bars 20 are positioned in substantially the vertical planes of the associated side members of the seat. In the forward movement of the seat the arms swing into the full line position shown in Fig. 2. In this part of the movement of the seat, the bars 2li2ii move inwardly in planes parallel with the angle bars I! and into planes slightly inside those of the This change in planes is permitted by the lateral swing of the suspension links 38 so that only a slightly perceptible rise isimparted to the seat at the ends of its forward and rearward movement. Thus the weight of the occupant of the seat at each end of the movement thereof operates to assist in starting the swinging movement in the other direction so that a smooth, easy action is obtained.

By reason of the rod 23 and arms 22, the movement of the arms i2 of both sets thereof is synchronized and must occur in unison. Thus the seat must swing evenly no matter what position of the same is occupied. Also, there is no teetering horizontally of one side of the seat with respect to the other, so that the seat cannot be racked out of shape.

While in describing the invention, I have referred in detail to the form, arrangement and construction of the parts thereof the same is to be considered only in the illustrative sense so that I do not wish to be limited thereto except as may be specifically set forth in the appended claims.

I claim as my invention:

1. A glider swing embodying therein a base, pairs of parallel motion arms pivoted on the base for a horizontal swinging movement about vertical axes, a seat, and means for supporting the seat from said pairs of arms.

2. A glider swing embodying therein a base, pairs of parallel motion arms pivoted on the base for a horizontal swinging movement about vertical axes, a seat, and means pivoted with respect to the arms of said pairs of arms at points spaced substantially equal distances from the axes thereof for supporting the seat from said pairs of arms.

3. A glider swing embodying therein a base, pairs of parallel motion arms, means on said base providing vertical pivot axes for one end of the arms of each pair on said base, a bar pivoted to and connecting the other end of the arms of each pair thereof at points spaced substantially equal distances from said axes, and a seat operatively supported from said bars.

4.-A glider swing embodying therein a base, pairs of parallel motion arms, means on said base providing vertical pivot axes for one end of the arms of each pair on said base, a bar pivoted to and connecting the other end of the arms of each pair thereof at points spaced substantially equal distances from said axes, a seat,

and pivoted links for pendently supporting each side of the seat from an associated bar.

5. A glider swing embodying therein a base, pairs of parallel motion arms pivoted on the base for a horizontal swinging movement about vertical axes, motion transmitting means between certain of the arms of both pairs for synchronizing the movement of said arms, a seat and means pivotally connected to the arms for supporting the seat therefrom.

6. A glider swing embodying therein a base, pairs of parallel motion arms pivoted on the base for a horizontal swinging movement about vertical axes, motion transmitting means between certain of the arms of both pairs for synchronizing the movement of said arms, a seat, and means pivotally connected to the arms of said pairs of arms at points spaced substantially equal distances from the axes thereof for supporting the seat from said arms.

7. A glider swing embodying therein a base, pairs of parallel motion arms, means on said base providing vertical pivot axes for one end of the arms of each pair on said base, a bar pivoted to and'connecting the other, end of the arms of each pair thereof at points spaced substantially equal distances from said axes, motion transmitting means between certain of the arms of both pairs for synchronizing the motion of said arms, and a seat operatively supported from said bars.

8. A glider swing embodying therein a base, pairs of parallel motion arms, means on said base providing vertical pivot axes for one end of the arms of each pair on said base, a bar pivoted to and connecting the other end of the arms of each pair thereof at points spaced substantially equal distances from said axes, motion transmitting means between certain of the arms of both pairs for synchronizing the motion of said arms, a seat, and pivoted links for pendently supporting each side of the seat from an associated bar.

9. A glider swing embodying therein a base, pairs of parallel motion arms, means on said base providing vertical pivot axes for one end of the arm of each pair on said base, a bar pivoted to and connecting the other end of the arms of each pair thereof at points spaced substantially equal distances from said axes, motion transmitting means between one arm of one pair and the other arm of the otherpair, a seat, and pivoted links for pendently supporting each side of the seat from an associated bar.

10. A glider swing embodying therein a base, a pair of parallel motion arms, means on said base providing vertical pivot axes for the inner ends of the arms of each pair with respect to the base, a bar connecting the outer ends of the arms of each pair at points spaced substantially equal distances from the axis thereof, a seat, and means for operatively supporting the seat from said bars.

11. A glider swing embodying therein a base, pairs of parallel motion arms, upstanding studs on the base providing vertical pivot axes for one end of the arms of each pair of arms, a member connecting the top end of the studs for each pair of arms together, braces connecting said members to the base, a bar connecting the other ends of the arms of each pair together, and a seat operatively supported at its sides from said bars.

LEWIS LARSEN. 

